A hypothesis is a statement that can be tested through a scientific investigation. What is the purpose of writing a hypothesis? OA. Hypotheses suggest new questions for further investigations
OB. Hypotheses give detalls about the data
OC. Hypotheses always match the conclusion
OD. Hypotheses help identify the variables

OD. Hypotheses help identify the variables

Explanation:

Source: had the question before

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.